com.baomidou.mybatisplus.generator.config.rules.NamingStrategy Maven / Gradle / Ivy
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/**
* Copyright (c) 2011-2020, hubin ([email protected]).
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.baomidou.mybatisplus.generator.config.rules;
import com.baomidou.mybatisplus.generator.config.ConstVal;
import com.baomidou.mybatisplus.toolkit.StringUtils;
/**
* 从数据库表到文件的命名策略
*
* @author YangHu, tangguo
* @since 2016/8/30
*/
public enum NamingStrategy {
/**
* 不做任何改变,原样输出
*/
nochange,
/**
* 下划线转驼峰命名
*/
underline_to_camel;
public static String underlineToCamel(String name) {
// 快速检查
if (StringUtils.isEmpty(name)) {
// 没必要转换
return "";
}
String tempName = name;
// 大写数字下划线组成转为小写 , 允许混合模式转为小写
if (StringUtils.isCapitalMode(name) || StringUtils.isMixedMode(name)) {
tempName = name.toLowerCase();
}
StringBuilder result = new StringBuilder();
// 用下划线将原始字符串分割
String camels[] = tempName.split(ConstVal.UNDERLINE);
for (String camel : camels) {
// 跳过原始字符串中开头、结尾的下换线或双重下划线
if (StringUtils.isEmpty(camel)) {
continue;
}
// 处理真正的驼峰片段
if (result.length() == 0) {
// 第一个驼峰片段,全部字母都小写
result.append(camel);
} else {
// 其他的驼峰片段,首字母大写
result.append(capitalFirst(camel));
}
}
return result.toString();
}
/**
* 去掉指定的前缀
*
* @param name
* @param prefix
* @return
*/
public static String removePrefix(String name, String... prefix) {
if (StringUtils.isEmpty(name)) {
return "";
}
if (null != prefix) {
for (String pf : prefix) {
if (name.toLowerCase().matches("^" + pf.toLowerCase() + ".*")) {
// 判断是否有匹配的前缀,然后截取前缀
// 删除前缀
return name.substring(pf.length());
}
}
}
return name;
}
/**
* 判断是否包含prefix
*
* @param name
* @param prefix
* @return
*/
public static boolean isPrefixContained(String name, String... prefix) {
if (StringUtils.isEmpty(name)) {
return false;
}
if (null != prefix) {
for (String pf : prefix) {
if (name.toLowerCase().matches("^" + pf.toLowerCase() + ".*")) {
return true;
}
}
}
return false;
}
/**
* 去掉下划线前缀且将后半部分转成驼峰格式
*
* @param name
* @param tablePrefix
* @return
*/
public static String removePrefixAndCamel(String name, String[] tablePrefix) {
return underlineToCamel(removePrefix(name, tablePrefix));
}
/**
* 实体首字母大写
*
* @param name 待转换的字符串
* @return 转换后的字符串
*/
public static String capitalFirst(String name) {
if (StringUtils.isNotEmpty(name)) {
return name.substring(0, 1).toUpperCase() + name.substring(1);
}
return "";
}
}